nismofly wrote:actually theyre stock rates (~2k / ~2k)...
Not so...
I called Eibach back-in-the-day when I was first looking for springs for my S14, and although they were reluctant at fiorst, they did give me the spring rates.
Pro-Kit and Sportline are both preogressive...
The Pro-Kits were something like:
(F) 180-215lbs/in (3.2k-3.8k)(R) 160-195lbs/in (2.8k-3.5k)
And the Sportlines were a little stiffer, something like:
(F) 200-235lbs/in (3.6k-4.2k)(R) 190-215lbs/in (3.4k-3.8k)
...
So my 5/4 estimate above may have been high...but they are quite a bit stirffer than stock...and as I has Sportlines on my old S13, I can attest to the "sportiness" of them...they were kinda low, but still pretty good springs.
- Brian